#11 -- Add project service

src/main/java/ru/ulstu/fc/project/service/ProjectService.java

@@ -0,0 +1,36 @@
+package ru.ulstu.fc.project.service;
+
+import org.springframework.stereotype.Service;
+import ru.ulstu.fc.project.model.Project;
+import ru.ulstu.fc.project.model.ProjectForm;
+import ru.ulstu.fc.project.repository.ProjectRepository;
+
+import java.util.List;
+
+@Service
+public class ProjectService {
+    private final ProjectRepository projectRepository;
+
+    public ProjectService(ProjectRepository projectRepository) {
+        this.projectRepository = projectRepository;
+    }
+
+    public List<Project> getCurrentUserProjects() {
+        return projectRepository.findAll();
+    }
+
+    public Project save(ProjectForm projectForm) {
+        if (projectForm.getId() == null) {
+            return projectRepository.save(new Project(projectForm));
+        }
+        Project project = projectRepository
+                .findById(projectForm.getId())
+                .orElseThrow(() -> new RuntimeException("Project not found by id"));
+        project.setName(projectForm.getName());
+        return projectRepository.save(project);
+    }
+
+    public void delete(ProjectForm projectForm) {
+        projectRepository.deleteById(projectForm.getId());
+    }
+}